should alternate
Regular verb: alternate - alternated- alternated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should alternate
you should alternate
she should alternate
we should alternate
you should alternate
they should alternate 	I should be alternating
you should be alternating
she should be alternating
we should be alternating
you should be alternating
they should be alternating	I should have alternated
you should have alternated
she should have alternated
we should have alternated
you should have alternated
they should have alternated	I should have been alternating
you should have been alternating
she should have been alternating
we should have been alternating
you should have been alternating
they should have been alternating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not alternate
you should not alternate
she should not alternate
we should not alternate
you should not alternate
they should not alternate 	I should not be alternating
you should not be alternating
she should not be alternating
we should not be alternating
you should not be alternating
they should not be alternating	I should not have alternated
you should not have alternated
she should not have alternated
we should not have alternated
you should not have alternated
they should not have alternated	I should not have been alternating
you should not have been alternating
she should not have been alternating
we should not have been alternating
you should not have been alternating
they should not have been alternating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I alternate?
should you alternate?
should she alternate?
should we alternate?
should you alternate?
should they alternate? 	should I be alternating?
should you be alternating?
should she be alternating?
should we be alternating?
should you be alternating?
should they be alternating? 	should I have alternated?
should you have alternated?
should she have alternated?
should we have alternated?
should you have alternated?
should they have alternated? 	should I have been alternating?
should you have been alternating?
should she have been alternating?
should we have been alternating?
should you have been alternating?
should they have been alternating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not alternate?
should you not alternate?
should she not alternate?
should we not alternate?
should you not alternate?
should they not alternate? 	should I not be alternating?
should you not be alternating?
should she not be alternating?
should we not be alternating?
should you not be alternating?
should they not be alternating? 	should I not have alternated?
should you not have alternated?
should she not have alternated?
should we not have alternated?
should you not have alternated?
should they not have alternated? 	should I not have been alternating?
should you not have been alternating?
should she not have been alternating?
should we not have been alternating?
should you not have been alternating?
should they not have been alternating?